Paul beebe



Patented Dec. 16, 1930 UNITED STATES PATENT OFFICE PAUL IBEEBE, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE GOODYEAR TIRE 6'6 RUBBER COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO TREATMENT FOR LINERS No Drawing.

This invention relates to methods of treating fabrics and it has particular relation to a method of treating those fabrics used as liners for interposition between plies of unvulcanized rubber or rubberized material.

One object of the invention is to provide a liner material which has little or no tendency to adhere to uncured rubber.

Another object of the invention is to provide a method of treating liners which is simpler and less expensive to use than those heretofore employed.

A further object of the invention is to provide atreated liner fabric which after use may be restored substantially to its original condition merely by passing it through the treating bath.

In the manufacture of rubber goods, it is frequently desirable to store books or rolls of unvulcanized sheet rubber or rubberized fabrics for considerable periods of time.

Owing to the tacky or adhesive nature of uncured rubber, it) is necessary to dispose plies of a non-adhesive liner material between the rubber surfaces in order to prevent undue adhesion therebetween. The liners usually comprise a textile fabric which has been coated or dipped in a non-adhesive substance such as nitrocellulose or viscose, which tends to render the fabric non-adhesive with respect to unvulcanized rubber. These treating materials are fairly satisfactory for a time. However, in use they soon become relatively hard and brittle, and tend to crack or check and then peel from the fabric. It is difficult to restore such liners to their original state. Furthermore, some of these compositions tend to decompose the fabric and thus reduce its period of usefulness. Also, the initial cost of treating the fabrics is relatively great.

This invention consists in the discovery that ordinary soaps constitute excellent materials for treating liners in order to render them non-adhesive. Practically any of the common soaps may be employed for this purpose, one specific example of such soap being that prepared from cocoanut oil. Pref erably, the soaps are employed in solutions which may have practically any desired con Application filed February 26, 1929. Serial No. 342,933.

wringer rolls, in order to remove any excess material which may adhere thereto, After having been partially dried by passing through the wringer rolls,'the fabric is then passed through heated drying rolls until substantially all of the moisture is removed therefrom. It is then ready for use without additional treatment.

Liner fabrics so treated may be formed into books between which the various sheets of rubber or rubberized material are disposed, or they may be left in the form of long strips in which a corresponding strip or sheet of rubber or rubberized material may be Wound up to form a roll.

The method of treatment disclosed herein is relatively inexpensive. is highly satisfactory because the fabrics treated in accordance with the teaching of the invention exhibit but slight tendenc to adhere to rubberized surfaces. Also, i by rea son of use the soap contained in the fabric is partially removed, the fabric may easily be restored to its original condition by passing it through a bath or soap similar to that originally employed.

Although I have described in detail only the preferred embodiments of the invention, it will be apparent to those skilled in the art that the invention is not so limited, but that various modifications may .be made therein without departing from the spirit of Furthermore, it

the invention or from the scope of the apa sticky surface of the nature of unvulcanized rubber and a separable liner thereon comprising woven fabric treated with soap whereby to render the surface thereof non- 5 adhesive with respect to the rubber.

In witness whereof, I have hereunto signed my name at Los Angeles, in the county of Los v Angel'es and State of California, U. S. A.,

this 18th day of February ,1929. PAUL BEEBE. 

